Machine for splicing cords



July 22 1924. 7

W. H. PEARSON momma FOR SPLICING CORD Filed May s, 1923 INVENTOR Patented July 22, 1924.

UNITE WILLIAM H. PEAR-SON, OF PASSAIC, NEVJ JERSEY;

MACHINE non. sPLIOING oonns.

Application filed May 5,

T 0 all whom it may concern: 7

Be it known that I, WILLIAM H. PEARSON, a citizen of the United States, and a resident of Rassaic, county of Passaic, and State of New Jersey, have invented certain new and useful Improvements in Machines for Splicing Cords, of which the followingis a specification.

This invention relates to an improved machine for splicing cord, and the improvementis embodied in a construction that holds the ends of the strands'of the opposed ends of the cords that are to be spliced'so that they need not be knotted, and the twisting that follows, when the strands are twisted to complete the splice, is smooth, since there are no knots where the strands are joined.

In splicing machines the ends of the cords that are to be joined are mounted side by side, usually in parallel relation, and are untwisted by asuitable mechanism so that the strands of the cord are parallel and easily separated, then these strands are cut oil, not at one place, but so that the splicing of the strands takes place at intervals in the cord when it is again twisted, but before the cord is again twisted these strands must be joined, and this has formerly been done by knotting them, and to facilitate this knotting the machines have been supplied with posts which form a ready means around which the ends of the strands can be tied, and then they are slipped from the post-and the knot completed. These knots are undesirable, more so in some industries than in others, since they form slight projections or thickened parts on the cord where the knots are located. I v

In this invention the ends of the strands are not knotted, but I provide mechanism where, after simply slightly twisting the overlapping parts of the strands where they join, the ends of these lightly twisted parts are held until the twisting has proceeded far enough to put a Slll'llGlBIlt pull on the ends to release them, by such pulling, from the clamps or holding means which hold them,

and as the twisting is proceeded with until it is finished these ends are turned or twisted into the convolutions of the other strands, and the outside of the cord, when completely spliced, is smooth and-is no thicker at any point than the unspliced portion of the cord.

The invention is illustrated in the accompanying drawing, in which Figure 1 is a perspective View of the improved clamp or 192-3. Serial No. 636,798.

holding means engaging the ends of lightly twisted strands before the mechanical'twisting operation commences. Figure ,2, is a perspective View to illustrate how the lightly'twisted' portion can be placed in the strand. Figure 3 one of the spring jaws for holding the end of a twisted portion, showing the opposite side from that illustrated in Figure 1, and Figure 4 is a perspective view taken from is an enlarged detail of v such opposite side and showing one of the Suitableholding or gripping means, such as the spring coils 12 and18, are utilized to hold the ends of the cord that are to be joined, the cord from the arbor 11 being I fastened to the holding means 13 and that from the arbor 10 being gripped by'the holding means 12, and then these cords are simultaneously rotated the proper, number of turns until. the cords are untwisted" so.

thattheir strands, usually three, are sub stantially parallel and can be easily separated. When so separated they are severed so (that the opposed'strands overlap sufliciently to permit a light manual twisting ofthese opposed ends, and Ishow the strands 1A of one cord extending from the arbor l1,and

the strands 15 of the other cord extending from the holding means '12, these opposed ends being. adaptedto be joined so that the y cord 16 is joined to the cord l'fwhen the splicing iscompleted. The complementary ends oi these cords that have been. severed.

these being shown at 1S-and19, are taken from the machine and thrown away as these are the unused ends of the untwisted cords Before the twisting begins, these opposed strands must be joined, and in my machine I may do this by loosely twisting them, usually by a complete turn, one over the other. 1

. as shown in Figure 2, where the twostrands 14c and 15 are twisted as at 20, and the ends 21 and 22 are grasped by the person" who does the twisting, and these endeare placed i a yielding means for holding them unti they are released by the pull consequent to the twisting operation.

The form of clamping means I show coinprises a bar 23 which has the plates 24rtending up from it, the plates 24 having spring clamps 25 at their opposite ends, each of the plates being slotted, as at 26, to give access deep enough to permit a thorough grasping of the ends of the twisted portion by the clamp 25. The clamps 25 may be of any desired construction, but I usually make them of flat thin spring material, formed with the divergent outer ends 27, and having the inner end 28 fastened to the plate by suitable means such as the solder 29.

The ends 21 and 22 of the twisted portion can thus be swung in from the ends of the plate well within the spring clamps 25 and pulled 'sufiiciently to tighten them up o that the twisted part 20 rests against the face of the plate 2.4, as shown in Figure i. If the ends 21 and 22 protrude too "far, the girls who operate the machines cut them oil so that no undue lengths will be provided to project from the spliced cord.

When these twisted portions have all been placed each against its plate 24:, the splicing begins, and the part 20 is tighten-ed as the splicing proceeds, and as the strands are twisted one around the other in the twisting operation, caused by the rotation of the arbor 11, the ends 21 and 22 are pulled on enough to overcome the grip of the sp clamps 25 and they are pulled through the plate 24 and twisted tightly in the cord itself by the other two strands that are being twisted around it. hen the splicing has been completed, that is, the mechanical twisting is accomplished, the ends 21 and 22 have entirely disappeared within the cord and the spliced cord is smooth along its whole exterior.

If desired, the bar 23 from which the plates 24 project may be mounted so that it canbe swung down out of the way when the cutting of the strands, preparatory to their being joined by the manual twisting, is done, and I show the bar 23 provided with knuckles 30 which receive the pivotal rod 31 which extends into the knuckles 32 of the leaves 34. The stops 35 can be provided to limit the movement of the bar 23 so that it does not swing backward, and the bar can be yieldingly held in position by the spring rotatable 'arbors, holding means, said arbor-s being adapted to untwist cords held by their respective holding means, and clamps for i a twisting cord, said machine, strands of a strand being ht-ly twisted where they are oined, a se of plates against which the lightly twisted portions are rotated when the mechanical twis 'ing begins, and yielding means for holding the ends of said lightly twisted portions.

a. A machine for splicing cords comprising means for twisting the overlapping strands of untwist-ed cords, and holding means for securing lightly twisted overlapping portions of said strands said holding means being adapted to release said lightly twisted portion under the twisting strain of the machine.

5. A machine for splicing cords comprising rotatable arbors, holding means, said arbors being adapted to untwist cords held by their respective holding means, and clamps at intervals" between one arbor and the holding means of the other for yieldingly holding the ends of lightly twisted overlapping strand of the untwisted cords.

6. In a machine for twisting the overlapping strands of untwisted cords after said overlapping strands are lightly twisted, clamps to receive the ends of said lightly twisted portions and including spring arms torelease aid ends under the twisting strain ot the machine.

7. In a machine for twisting the overlap ping strands of untwisted cords after said overlapping strands are lightly twisted, a plate against which said lightly twisted portions bear and including clamps to yieldingly hold the end 01. said portion against the plate and adapted to release said ends during the twisting operation of the machine.

8. In a machine for twisting the oi' er'lapping strands or" untwisted cords after said overlapping strands are lightly twisted, a bar with plates projecting therefrom against which. plates the lightly twisted portions bear said plates having spring clamps at their ends for holding the ends of said portions and adapted to release them during the twisting operation of the machine.

In testimony that I claim the foregoing, l have hereto set my hand, this 28th day of April, 1923.

iViLlZilAll l 

